DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Implementation

Mercurial (a4e764f8dda4)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef MOZILLA_GFX_DRAWTARGETTILED_H_
#define MOZILLA_GFX_DRAWTARGETTILED_H_

#include "2D.h"

#include "mozilla/Vector.h"

#include "Filters.h"
#include "Logging.h"

#include <vector>

namespace mozilla {
namespace gfx {

struct TileInternal : public Tile {
  TileInternal() : mClippedOut(false) {}

  explicit TileInternal(const Tile& aOther)
      : Tile(aOther), mClippedOut(false) {}

  bool mClippedOut;
};

class DrawTargetTiled : public DrawTarget {
 public:
  DrawTargetTiled();

  bool Init(const TileSet& mTiles);

  bool IsTiledDrawTarget() const override { return true; }

  bool IsCaptureDT() const override {
    return mTiles[0].mDrawTarget->IsCaptureDT();
  }
  DrawTargetType GetType() const override {
    return mTiles[0].mDrawTarget->GetType();
  }
  BackendType GetBackendType() const override {
    return mTiles[0].mDrawTarget->GetBackendType();
  }
  already_AddRefed<SourceSurface> Snapshot() override;
  void DetachAllSnapshots() override;
  IntSize GetSize() const override {
    MOZ_ASSERT(mRect.Width() > 0 && mRect.Height() > 0);
    return IntSize(mRect.XMost(), mRect.YMost());
  }
  IntRect GetRect() const override { return mRect; }

  void Flush() override;
  void DrawSurface(SourceSurface* aSurface, const Rect& aDest,
                   const Rect& aSource, const DrawSurfaceOptions& aSurfOptions,
                   const DrawOptions& aOptions) override;
  void DrawFilter(FilterNode* aNode, const Rect& aSourceRect,
                  const Point& aDestPoint,
                  const DrawOptions& aOptions = DrawOptions()) override;
  void DrawSurfaceWithShadow(
      SourceSurface* aSurface, const Point& aDest, const Color& aColor,
      const Point& aOffset, Float aSigma,
      CompositionOp aOperator) override { /* Not implemented */
    MOZ_CRASH("GFX: DrawSurfaceWithShadow");
  }

  void ClearRect(const Rect& aRect) override;
  void MaskSurface(const Pattern& aSource, SourceSurface* aMask, Point aOffset,
                   const DrawOptions& aOptions = DrawOptions()) override;

  void CopySurface(SourceSurface* aSurface, const IntRect& aSourceRect,
                   const IntPoint& aDestination) override;

  void FillRect(const Rect& aRect, const Pattern& aPattern,
                const DrawOptions& aOptions = DrawOptions()) override;
  void StrokeRect(const Rect& aRect, const Pattern& aPattern,
                  const StrokeOptions& aStrokeOptions = StrokeOptions(),
                  const DrawOptions& aOptions = DrawOptions()) override;
  void StrokeLine(const Point& aStart, const Point& aEnd,
                  const Pattern& aPattern,
                  const StrokeOptions& aStrokeOptions = StrokeOptions(),
                  const DrawOptions& aOptions = DrawOptions()) override;
  void Stroke(const Path* aPath, const Pattern& aPattern,
              const StrokeOptions& aStrokeOptions = StrokeOptions(),
              const DrawOptions& aOptions = DrawOptions()) override;
  void Fill(const Path* aPath, const Pattern& aPattern,
            const DrawOptions& aOptions = DrawOptions()) override;
  void FillGlyphs(ScaledFont* aFont, const GlyphBuffer& aBuffer,
                  const Pattern& aPattern,
                  const DrawOptions& aOptions = DrawOptions()) override;
  void Mask(const Pattern& aSource, const Pattern& aMask,
            const DrawOptions& aOptions = DrawOptions()) override;
  void PushClip(const Path* aPath) override;
  void PushClipRect(const Rect& aRect) override;
  void PopClip() override;
  void PushLayer(bool aOpaque, Float aOpacity, SourceSurface* aMask,
                 const Matrix& aMaskTransform,
                 const IntRect& aBounds = IntRect(),
                 bool aCopyBackground = false) override;
  void PushLayerWithBlend(bool aOpaque, Float aOpacity, SourceSurface* aMask,
                          const Matrix& aMaskTransform,
                          const IntRect& aBounds = IntRect(),
                          bool aCopyBackground = false,
                          CompositionOp = CompositionOp::OP_OVER) override;
  void PopLayer() override;

  void PadEdges(const IntRegion& aRegion) override;

  void SetTransform(const Matrix& aTransform) override;

  void SetPermitSubpixelAA(bool aPermitSubpixelAA) override;

  already_AddRefed<SourceSurface> CreateSourceSurfaceFromData(
      unsigned char* aData, const IntSize& aSize, int32_t aStride,
      SurfaceFormat aFormat) const override {
    return mTiles[0].mDrawTarget->CreateSourceSurfaceFromData(aData, aSize,
                                                              aStride, aFormat);
  }
  already_AddRefed<SourceSurface> OptimizeSourceSurface(
      SourceSurface* aSurface) const override {
    return mTiles[0].mDrawTarget->OptimizeSourceSurface(aSurface);
  }

  already_AddRefed<SourceSurface> CreateSourceSurfaceFromNativeSurface(
      const NativeSurface& aSurface) const override {
    return mTiles[0].mDrawTarget->CreateSourceSurfaceFromNativeSurface(
        aSurface);
  }

  already_AddRefed<DrawTarget> CreateSimilarDrawTarget(
      const IntSize& aSize, SurfaceFormat aFormat) const override {
    return mTiles[0].mDrawTarget->CreateSimilarDrawTarget(aSize, aFormat);
  }

  bool CanCreateSimilarDrawTarget(const IntSize& aSize,
                                  SurfaceFormat aFormat) const override {
    return mTiles[0].mDrawTarget->CanCreateSimilarDrawTarget(aSize, aFormat);
  }

  already_AddRefed<PathBuilder> CreatePathBuilder(
      FillRule aFillRule = FillRule::FILL_WINDING) const override {
    return mTiles[0].mDrawTarget->CreatePathBuilder(aFillRule);
  }

  already_AddRefed<GradientStops> CreateGradientStops(
      GradientStop* aStops, uint32_t aNumStops,
      ExtendMode aExtendMode = ExtendMode::CLAMP) const override {
    return mTiles[0].mDrawTarget->CreateGradientStops(aStops, aNumStops,
                                                      aExtendMode);
  }
  already_AddRefed<FilterNode> CreateFilter(FilterType aType) override {
    return mTiles[0].mDrawTarget->CreateFilter(aType);
  }

 private:
  std::vector<TileInternal> mTiles;

  // mClippedOutTilesStack[clipIndex][tileIndex] is true if the tile at
  // tileIndex has become completely clipped out at the clip stack depth
  // clipIndex.
  Vector<std::vector<bool>, 8> mClippedOutTilesStack;

  IntRect mRect;

  struct PushedLayer {
    explicit PushedLayer(bool aOldPermitSubpixelAA)
        : mOldPermitSubpixelAA(aOldPermitSubpixelAA) {}
    bool mOldPermitSubpixelAA;
  };
  std::vector<PushedLayer> mPushedLayers;
};

class SnapshotTiled : public SourceSurface {
 public:
  SnapshotTiled(const std::vector<TileInternal>& aTiles, const IntRect& aRect)
      : mRect(aRect) {
    for (size_t i = 0; i < aTiles.size(); i++) {
      mSnapshots.push_back(aTiles[i].mDrawTarget->Snapshot());
      mOrigins.push_back(aTiles[i].mTileOrigin);
    }
  }

  SurfaceType GetType() const override { return SurfaceType::TILED; }
  IntSize GetSize() const override {
    MOZ_ASSERT(mRect.Width() > 0 && mRect.Height() > 0);
    return IntSize(mRect.XMost(), mRect.YMost());
  }
  IntRect GetRect() const override { return mRect; }
  SurfaceFormat GetFormat() const override {
    return mSnapshots[0]->GetFormat();
  }

  already_AddRefed<DataSourceSurface> GetDataSurface() override {
    RefPtr<DataSourceSurface> surf =
        Factory::CreateDataSourceSurface(mRect.Size(), GetFormat());
    if (!surf) {
      gfxCriticalError()
          << "DrawTargetTiled::GetDataSurface failed to allocate surface";
      return nullptr;
    }

    DataSourceSurface::MappedSurface mappedSurf;
    if (!surf->Map(DataSourceSurface::MapType::WRITE, &mappedSurf)) {
      gfxCriticalError()
          << "DrawTargetTiled::GetDataSurface failed to map surface";
      return nullptr;
    }

    {
      RefPtr<DrawTarget> dt = Factory::CreateDrawTargetForData(
          BackendType::CAIRO, mappedSurf.mData, mRect.Size(),
          mappedSurf.mStride, GetFormat());

      if (!dt) {
        gfxWarning() << "DrawTargetTiled::GetDataSurface failed in "
                        "CreateDrawTargetForData";
        surf->Unmap();
        return nullptr;
      }
      for (size_t i = 0; i < mSnapshots.size(); i++) {
        RefPtr<DataSourceSurface> dataSurf = mSnapshots[i]->GetDataSurface();
        dt->CopySurface(dataSurf,
                        IntRect(IntPoint(0, 0), mSnapshots[i]->GetSize()),
                        mOrigins[i] - mRect.TopLeft());
      }
    }
    surf->Unmap();

    return surf.forget();
  }

  std::vector<RefPtr<SourceSurface>> mSnapshots;
  std::vector<IntPoint> mOrigins;
  IntRect mRect;
};

}  // namespace gfx
}  // namespace mozilla

#endif